Road-grading machine



Sept. 17, 1929. J. o. ARCHER ROADGRADING MACHINE 3 Sheets-Sheet 1 Filed May 28, 1927 QZTMJW ATTORNEY Sept. 17, 1929. J. o. ARCHER 1,7

' now GRADING MACHINE- Filed May 28. 1927 s Sheets-Sheet 2 Ili INVENT JQ flftfz e1 5 JM W ATTORNEY Sept. 1 7, 1929. J o ARCHER.

ROAD GRADING MACHINE 3 Sheets-Sheet 3 Filed May 28, 1927 Q NVENTOR J 0. flftfier 0: M ATTORNEY 59 tending upwardly therefr'omi a'pair affront porting armsfi? arestepped relativeu to, the

Patented Sept. 17, 1929 1,728,465

UNITED "STATES A owl-ca JOHN o. Ancmmor SOLOMONSVILLE, ARIZONA nonn-onnnmoamonmn Application filed my 28, 1927. serial No. 11 94,969.

This invention relates to new and useful and rear plates 14 and15. Secured to thenpimprovements in road grading machines and per endsof the plates'12 andild is a cross-bar has among its objects to provide a machine 16, and secured to the upper ends of the rear which will function to successfully cut the plates 13 and lisacrossbar' 17. Securedto I 5 humps in a road and simultaneously smooth the cross-bars 16 and17 is a pair of longitudi- .55

the road surface toprovide a wheeled main nally extending supporting bars .18 -and. 19. 7' frame having a carriagefor supporting the {The cross bars 16 and 17 and the'longitudiroad-engaging cutters and smoothing means; nal bars 18 and 19 form in effect a. suppleto provide means for raising or lowering mental frame carried by the mainframe.

either or both sides of the carriage and there- The carriage B includes ahorizontalframe c0 by adapt the cutters and smoothing means to having longitudinal or sidebars 20 and21, the road surface, and to provide cutters which and a front endba'r 22 and rear end.- bar 23. are readily reversible. Disposed'in the frontpa'rt of the carriage and With theseand other objectsinviewwhich connecting. the side bars20 and 21 is apluwill more fully appear, the nature of the in 'rality of spaced transverse'bars 24,25 and 26. 5

vention will be more clearly understood by The bars22 and; 24 are connected'by a plu following the description, the appended rality of spaced supporting arms 27; the bars claims, and the several views illustrated in the 2 1 and 25 are connectedby a series of spaced accompanying drawings. supporting arms 28, and thebars 25 and26 In the accompanyin drawings whlch llus are connected by a series of spaced su pere 70 I trate one form of my invention: 'ing arms 29. "Detachably and reversibly se- Fig. 1 is a side elevationof aroad grading cured toeach of the supporting arms'27, 28 machine constructed in accordance with-my and 29 is a ground-engaging'cutterC. "Each invention I 1 cutter-is formedfrom ablankof flat or sheet Fig. 2 isa topplan view thereof, 7 metal having an upper edge 30, a'frontedge 75 Fig. 3 is a rear elevation of the machine, 31, a bottom edge 32, and a rear edge The Fig. 1 is a detail sectional view ofFi g. 2. lower forward portion of thei'cutter or blade Fig. 5 is a detailsectional view showingi's'fcut-away to form aplurality of cutting the guiding means between the wheeled main teeth Maud similarly the upper and rear por- 30 frame and the carriage, tion of the blade iscut-awayto form alplu- 80 Fig. 6 is an enlarged elevation showing the rality of cutting teeth 35. ,These teeth are 2 means for mounting one of the cutters on the dis o d in stepped relation andth'e teeth 34 carriage, and I are disposed in la diagonal line extending Fig. 7 is a perspectiveview of one of the downwardly'fromf the front edge31 to the 35 cutters. bottom edge 32. The teeth 35 are also dis- 85 Like reference numerals designate 'correposed in adiagonal line extending upwardly sponding parts throughout the several figures f the-rear edge 33 to the top edge 30. of the drawings. c Each cutting blade C is provided with a pair Referring to the accompanying drawings in of openings 36 and 37 for receiving an at- 1 detail, I have illustrated a road grading mataehing bolt v38 which passes through the asv chine which includes a'wheeled main frame 'soeiate'dsupporting arm. A second bolt 39 is f A and a carriage B. The main frame Av is associated with ch cutter C and this belt supported at its front. end by wheels 5+5 is carried by the associated supporting arm and at its rear end by traction wheels 6-6. andextends: above the teeth 35 for engage- The frameA. consists ofside bars 78,afront merit thereby so as to prevent any upward .95 bar 9, a rear bar lO, and intermediate braces swinging movement of said cutter. The cut- 1111. Fixed to the side bar 7 is a pair of ,tersQG'aresecured'to thecarriageB whereby upwardly extending front and rear plates the front cutting teeth 34 are disposedin a 12 and13, and fixed to the side bar 8 andexplane below the carriage proper. The supsupporting arms 29. It will be noted that there are five supporting arms 27, six supporting arms 28, and tweleve supporting arms 29. It will also be noted that the supporting arms 28 are stepped relative to the supporting arms 27 and 29.

Secured to the side bars 20 and 21 in rear of the cutters G are two intermediate transverse bars and 41. These two bars 40 and 41 together with the rear or end bar 23 con stitute a road smoothing means. These bars are disposed in a horizontal plane above the teeth 34 of the cutters G and function to smooth the dirt cut by the cutters C.

It is desirable to raise or lower the carriage B relative to the main frame A so as to position the cutters C at difierent elevations relative to the road surface. It is also desirable to provide means for raising or lowering either or both sides of the carriage B so as to position said carriage in a plane relative to the horizontal in accordance with the surface of the road. To this end, I have mounted upon the supplemental frame a pair of alined operating shafts 42 and 43, said shafts being journaled at their outer ends in supporting posts 44 and 45, and attheir inner, endsin a common supporting post 46. A hand wheel47 is fixed to the shaft42, and a hand wheel 48 is fixed to the shaft 43. A front cable 49 has its rear end fixed to the shaft 42 and its, front end fixed to thefront end of the right hand side of the carriage B, said cable being trained over an idler 50 journaled on the longitudinally eX- tending arm 18 'of the supplemental frame and located at a point directly above the point of connection between the cable 49 and the carriage B. A rear cable 51 has its upper end fixed to the shaft 42 and its lower end fixed to the rear end of the right hand side of the carriage B; Thusby rotating the shaft42 towards the left, as viewed in Fig. 1, both the cables 49 and 51 will be wound therearound, and consequently the right hand side of the carriage B will be elevated, and if the shaft 42 is turned in the reverse direction the right hand side of the carriage will be lowered. A front cable 52 has one end trained over an idler 53, similar in position to the idler 50, and the extreme front end portion of said cable is connected to thefront portion of the lefthand side of the carriageB. A rear cable 54 has one end fixed to the shaft 43 and the lower end fixed to the rear portion of the left hand side of the carriage B. Thus when the shaft 43 is turned towards the left, as viewed in Fig; 1, the left hand side of the carriage B will be elevated. It will be observed that the raising and lowering means as thus described will be dependent relative'to each other. In order to support the weight of the carriage B, and thereby relieve the operator from supporting this weight, I have provided the shafts 42 and 43 with ratchet wheels 55 and 56 respectively. Associated with each ratchet wheel is a locking dog 57 which is normally held in engagement with the wheel by means of a spring 58. A foot control lever 59 is asso' 'ciated with each dog 57 so as to release said dog whenever it is desired to lower the carriage B.

It is also desirable to provide means for guiding the carriage B in a vertical direction whenever said carriage is being raised or lowered, and to this end, I have provided each of the side bars 7 and 8 with front and rear vertically disposed guides 60 and 61, and fixed to the side bars 20 and 21 of the carriage B are front and rear guide pins 62 and 63 which respectively cooperate with the vertical guides 60 and 61.

From the foregoing, it will be observed that I have provided a road grading machine which includes a wheeled main frame and a carriage supported thereon for vertical movements; a plurality of cutter blades mounted on the front part of the carriage; a plurality of smoothing arms mounted on the rear part of the carriage, and means for raising or lowering either or both sides of said carriage whereby the carriage may be angularly adjusted relative to the horizontal to meet different road surface conditions. It will also be observed that the cutters are constructed and supported whereby they may-be readily reversed or interchanged whenever the occasion arises.

It is of course to be understood that the details of structure and arrangements of parts may be variously changed and modified with out departing from the spirit and scope of my invention.

I claim:

1. In a road grading machine, the combination with a wheeled main frame, of a carriage supported thereon for vertical movements, vertically disposed guides fixed to the main frame adjacent the front and rear ends and on each side thereof, guide pins fixed to the carriage for cooperation with the guides, separate means for raising and lowering each side of said carriage, and a plurality of roadengaging cutters fixed to said carriage.

2. In a road grading machine, the combination with a wheeled main frame, of a carriage supported thereon for vertical move ments, means for raising and lowering said carriage comprising a pair of alined operating shafts supported transversely adjacent the rear end of the main frame, a pair of front and rear cables connecting each shaft with the front and rear ends of the associated side of the frame, idlers journaled on the frame directly above the respective points of connections between the front cables and the carriage, and a plurality of road-engaging cutters fixed to said'carriage.

3. In a road grading machine, the combina tion with a wheeled main frame, of a carriage supported thereon for vertical movements,

means for raising and lowering said carriage comprising a pair of alined operating shafts supported transversely adjacent the rear end of the main frame, a pair of front and rear cables connecting each shaft with the front and rear ends of the associated side of the frame, idlers journaled on the frame directly above the respective points of connections between the front cables and the car riage, manual means for independently rotating said shafts, aratchet mechanism for retaining the shaft against movement in any position of adjustment of said carriage, separate foot cont-rolled means associated with each ratchet mechanism, and a plurality of road-engaging cutters fixed to said carriage.

4. In road grading machines, cutters adapted to be drawn over the roads to scarify the said roads, each cutter comprising a metal plate having its lower forward portion cutaway to forma plurality of stepped cutting teeth extending downwardly in a diagonal plane from the front edge of the plate to the bottom edge thereof.

5. In a road grading machine, the combination with a main wheeled frame, of a carriage supported thereon for vertical movements, independent cable connections at each side of the carriage, independent winding devices associated with the cable connections for raising and lowering the respective sides of the carriage independently of each other, a ratchet mechanism for retaining each of the winding devices against movement in any position of adjustment of said carriage, separate foot controlled means associated with each ratchet mechanism, and a plurality of road engaging cutters fixed to said carriage.

6. In road grading machines, cutters adapt-' ed to be drawn over the roads to scarify the said roads, each cutter comprising a met-a1 plate having its lower forward portion and its upper rear portion cut-away to form a lower front and an upper rear plurality of stepped cutting teeth, each plurality extending diagonally downwardly from front to rear, and means to reversibly mount the cutters so that either of the upper or lower pluralities of teeth may be presented to the road.

7. In road grading machines, cutters adapt-' ed to be drawn over the roads to scarify the said roads, each cutter comprising a metal plate having its lower forward portion and its upper rear portion cutaway to form a lower front and an upper rear plurality of stepped cutting teeth, each plurality extending diagonally downwardly from front to rear, and means to reversibly mount the cutters so that either'of the upper or lower pluralities of teeth may be presented to the road, said mounting means comprising a pivot for the forward portion of each tooth and means to abut the rearward portion of each tooth against upward movement about its pivoted mounting.

8. A road scarifying means comprising a frame including front, rear, side and spaced transverse bars, and spaced longitudinal bars oinmg certain of the transverse bars; and

cutters carried by the frame and adapted to means to pivot the advance end of each cutter to a longitudinal bar with a portion thereof extending below the frame to engage the road and with its trailing end constrained against gpward movement by an adjacent transverse 9. A road scarifying means comprising a frame including front, rear, side and spaced transverse bars, and spaced longitudinal bars joining certain of the transverse bars, all of said bars being positioned in a common horizontal plane; and cutters carried by the frame and adapted to be drawn over the roads to scarify the said roads, each cutter comprising a metal plate having its lower forward portion and its upper rear portion cut-away to form a lower front and an upper rear plurality of stepped cutting teeth, each plurality extending diagonally downwardly from front to rear, and means to pivot the advance end of each cutter to a longitudinal bar toward the foremost part of the frame with a portion thereof extending below the frame to engage the road and with its trailing end constrained against upward movement by an adjacent transverse bar.

In testimony whereof I hereunto aflix my signature.

JOHN O. ARCHER. 

